Air diffuser guard



FIG. 1 is a front perspective view of an air diffuser guard showing my new design;

FIG. 2 is an enlarged end elevational view thereof, the opposite end being a mirror image;

FIG. 3 is a front elevational view thereof, with the center portion broken away for ease of illustration, the rear elevational view being a mirror image;

FIG. 4 is a top plan view thereof, with the center portion broken away for ease of illustration; and,

FIG. 5 is a bottom plan view thereof, with the center portion broken away for ease of illustration. 

The ornamental design for an air diffuser guard, as shown and described. 